Abstract

Fully rigorous optical Bloch equations based on exciton states in a quantum well are presented for the study of coherent terahertz radiative dynamics from ultrafast optical excitation. The new formalism includes valence-band mixing, the angular-momentum dependence of exciton states, and heavy-hole–light-hole exciton quantum beats in single quantum wells. Both time-domain and frequency-domain solutions of the optical Bloch equations from ultrafast excitation are presented. The theoretical model shows good agreement with the single-quantum-well terahertz generation experiment of Planken et al. [Phys. Rev. Lett. 69, 3800 (1992)].

© 1996 Optical Society of America

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